When you&';re unsure what kind of weather to expect, it&';s time for the Exo Pants. The waterproof membrane is breathable, so these ultra-light and 100% waterproof pants are comfortable, too. Plus, the knee-high boot zipper lets you get them on fast and vent easily, so you don&';t get too muggy. They even pack into their own self-contained pocket for easy carrying.